Stretched canvas framing. Anyone know how?

Remember my painting that I thought was lost? Well, now I need to remount it. It is an oil painting on canvas and I would like it to be a "stretched canvas".
Any advice how to go about this? There are lots of clips on YouTube etc so I'm looking for personal experience.

I'm all for taking it to the framers for them to do it, but himself thinks we should be able to do it ourselves. *sigh*